private void Refresh()
{
if (this.Sections == null || this.Sections.Count == 0)
{
return;
}
using (List <ListPanelItem> .Enumerator enumerator = this.displayAllItems.GetEnumerator())
{
while (enumerator.MoveNext())
{
ListPanelItem current = enumerator.Current;
if (current.IndexInSection == -1)
{
this.DestroySectionItem(current as ListPanel.ListPanelSectionItem);
}
else
{
this.DestroyListItem(current);
}
}
}
this.displayAllItems.Clear();
this.animationState = ListPanel.AnimationState.None;
this.terminalState = ListPanel.TerminalState.None;
this.animation = false;
this.UpdateItems(0f);
}
public ListPanel()
{
this.backgroundSprt = new UISprite(1);
base.RootUIElement.AddChildLast(this.backgroundSprt);
UISpriteUnit unit = this.backgroundSprt.GetUnit(0);
unit.Color = new UIColor(0f, 0f, 0f, 0f);
this.scrollBar = new ScrollBar(ScrollBarOrientation.Vertical);
this.AddChildLast(this.scrollBar);
this.displayAllItems = new List <ListPanelItem>();
this.displayListItems = new List <ListPanelItem>();
this.cacheListItems = new List <ListPanelItem>();
this.displaySectionItems = new List <ListPanel.ListPanelSectionItem>();
this.cacheSectionItems = new List <ListPanel.ListPanelSectionItem>();
this.animationState = ListPanel.AnimationState.None;
this.terminalState = ListPanel.TerminalState.None;
this.terminalDistance = 0f;
this.Sections = null;
this.ShowSection = true;
this.ShowEmptySection = true;
this.ShowItemBorder = true;
base.Clip = true;
base.HookChildTouchEvent = true;
DragGestureDetector dragGestureDetector = new DragGestureDetector();
dragGestureDetector.DragDetected += new EventHandler <DragEventArgs>(this.DragEventHandler);
base.AddGestureDetector(dragGestureDetector);
FlickGestureDetector flickGestureDetector = new FlickGestureDetector();
flickGestureDetector.FlickDetected += new EventHandler <FlickEventArgs>(this.FlickEventHandler);
base.AddGestureDetector(flickGestureDetector);
}
private void DragEventHandler(object sender, DragEventArgs e)
{
if (this.IsScrollable())
{
base.ResetState(false);
this.animationState = ListPanel.AnimationState.Drag;
this.UpdateItems(e.Distance.Y);
this.animation = false;
}
}
private void OnTouchEventImpl(TouchEventCollection touchEvents)
{
switch (touchEvents.PrimaryTouchEvent.Type)
{
case TouchEventType.Up:
if (this.animationState == ListPanel.AnimationState.Drag)
{
this.animationState = ListPanel.AnimationState.None;
this.animation = false;
switch (this.terminalState)
{
case ListPanel.TerminalState.Top:
this.terminalState = ListPanel.TerminalState.TopReset;
this.animation = true;
break;
case ListPanel.TerminalState.Bottom:
this.terminalState = ListPanel.TerminalState.BottomReset;
this.animation = true;
break;
}
}
if (this.ScrollBarVisibility == ScrollBarVisibility.ScrollingVisible && !this.animation)
{
this.scrollBar.Visible = false;
}
return;
case TouchEventType.Down:
switch (this.terminalState)
{
case ListPanel.TerminalState.None:
this.animationState = ListPanel.AnimationState.None;
this.animation = false;
return;
case ListPanel.TerminalState.Top:
case ListPanel.TerminalState.TopReset:
this.ResetTopTerminalItems();
return;
case ListPanel.TerminalState.Bottom:
case ListPanel.TerminalState.BottomReset:
this.ResetBottomTerminalItems();
return;
default:
return;
}
// break;
default:
return;
}
}
private void ResetBottomTerminalItems()
{
float num = this.Height;
for (int i = this.displayAllItems.Count - 1; i >= 0; i--)
{
ListPanelItem listPanelItem = this.displayAllItems[i];
listPanelItem.Y = num - listPanelItem.ContainEdgeHeight;
num = listPanelItem.Y;
}
this.terminalState = ListPanel.TerminalState.None;
this.terminalDistance = 0f;
this.animationState = ListPanel.AnimationState.None;
this.animation = false;
}
private void ResetTopTerminalItems()
{
float y = 0f;
using (List <ListPanelItem> .Enumerator enumerator = this.displayAllItems.GetEnumerator())
{
while (enumerator.MoveNext())
{
ListPanelItem current = enumerator.Current;
current.Y = y;
y = current.Y + current.ContainEdgeHeight;
}
}
this.terminalState = ListPanel.TerminalState.None;
this.terminalDistance = 0f;
this.animationState = ListPanel.AnimationState.None;
this.animation = false;
}
private void FlickEventHandler(object sender, FlickEventArgs e)
{
if (this.IsScrollable())
{
base.ResetState(false);
this.animationState = ListPanel.AnimationState.Flick;
this.animation = true;
switch (this.terminalState)
{
case ListPanel.TerminalState.Top:
case ListPanel.TerminalState.Bottom:
this.scrollVelocity = 0f;
return;
default:
this.scrollVelocity = e.Speed.Y * this.flickStartRatio;
break;
}
}
}
protected override void OnUpdate(float elapsedTime)
{
base.OnUpdate(elapsedTime);
if (!this.animation)
{
return;
}
ListPanel.AnimationState animationState = this.animationState;
if (animationState == ListPanel.AnimationState.Flick)
{
if (this.terminalState == ListPanel.TerminalState.None)
{
this.scrollVelocity *= (float)Math.Pow((double)(1f - this.flickDecelerationRatio), (double)(elapsedTime / 16.6f));
}
else
{
this.scrollVelocity *= (float)Math.Pow((double)(1f - this.terminalDecelerationRatio), (double)(elapsedTime / 16.6f));
}
if (Math.Abs(this.scrollVelocity * elapsedTime / 16.6f) < 0.03012048f || Math.Abs(this.terminalDistance) >= this.maxTerminalDistance)
{
this.scrollVelocity = 0f;
this.animationState = ListPanel.AnimationState.None;
switch (this.terminalState)
{
case ListPanel.TerminalState.Top:
this.terminalState = ListPanel.TerminalState.TopReset;
this.animation = true;
break;
case ListPanel.TerminalState.Bottom:
this.terminalState = ListPanel.TerminalState.BottomReset;
this.animation = true;
break;
default:
this.animation = false;
break;
}
}
else
{
this.UpdateItems(this.scrollVelocity);
}
}
switch (this.terminalState)
{
case ListPanel.TerminalState.TopReset:
if (this.terminalDistance < 1f)
{
this.ResetTopTerminalItems();
}
else
{
this.UpdateItems(this.terminalDistance * (float)Math.Pow((double)(1f - this.terminalReturnRatio), (double)(elapsedTime / 16.6f)) - this.terminalDistance);
}
break;
case ListPanel.TerminalState.BottomReset:
if (this.terminalDistance > -1f)
{
this.ResetBottomTerminalItems();
}
else
{
this.UpdateItems(this.terminalDistance * (float)Math.Pow((double)(1f - this.terminalReturnRatio), (double)(elapsedTime / 16.6f)) - this.terminalDistance);
}
break;
}
this.UpdateScrollBarVisible();
}
